高压物理学报2012，Vol.26Issue(1)：27-32,6.
金刚石对顶砧原位电导率测量系统
An in Situ Electrical Conductivity Measurement System in Diamond Anvil Cell
李明 1杨洁 2杨伍明 3王会新 3李立新 3高春晓4
作者信息
- 1. 河南理工大学物理化学学院,河南焦作454000／吉林大学超硬材料国家重点实验室,吉林长春130012
- 2. 空军航空大学基础部,吉林长春130012
- 3. 河南理工大学物理化学学院,河南焦作454000
- 4. 吉林大学超硬材料国家重点实验室,吉林长春130012
- 折叠
摘要
Abstract
In situ resistance measurement in a diamond anvil cell under high pressure and high temperature will be restricted by the thermal insulation. If the ordinary powder heat insulating material is used,it is difficult to introduce the electrode and measure resistance accurately. Here the in situ resistance measurement under high pressure and high temperature is performed successfully using a sputtered alumina film coated onto the surface of the top anvil plate as an insulation layer and a sputtered molybdenum film used as an electrode. With this device,the electrical conductivity o~ iron magnesium silicate [（Mg0.875 ,Fe0.125）23iO4] under 31-35 GPa and 1 500-3 400 K is obtained. It is found that the activation energy increases with pressure, and the activation volume and activation energy are significantly reduced compared to that under the pressure and temperature lower than 15 GPa and 1 200 K.关键词
金刚石对顶砧/高温高压/电导率/激活能Key words
diamond anvil cell/high temperature and high pressure/electrical conductivity/activation energy分类
数理科学引用本文复制引用
李明,杨洁,杨伍明,王会新,李立新,高春晓..金刚石对顶砧原位电导率测量系统[J].高压物理学报,2012,26(1):27-32,6.
